Turret-post.



C. M. CONRADSON.

TURRET POST.

APPLICATION FILED APR. 25, 1914. LMSQM a Patented June 15, 1915.

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C. M. CONRADSON.

TURRET POST.

APPLICATION FILED APR. 25, 1914.

1 1 43,25 1 Patented June 15, 1915.

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CONRAD GON'RADSON, OE MADISON, WISCONSIN.

TURRET-POST.

Specification of Letters Patent.

Patented June 15, 1915.

Application filed. Apri125, 1914. Serial No. 834,475.

To all whom it may concern Be it known that I, CONRAD M. CONRAD- SON, citizen of the United States, resident of Madison, county of Dane, State of Wisconsin, have invented certain new and useful Improvements in Turret-Posts, of which the following is a specification.

The object of my invention is to provide a tool post capable of use on an ordinary engine lathe, which when so equipped, will have the capacity of a turret lathe.

A further object is to reduce the cost of certain kinds of work which cannot be advantageously handled on a turret lathe and which cannot be economically finished on an engine lathe. A further object is to provide a tool post adapted particularly for the class of work intermediate to that performed on an engine lathe and a hand turret lathe.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification, Figure 1 is a vertical sectional view through the tool post, Fig. 2 is a front elevation of the post, showing the position of the tool holders thereon, Fig. 3 is a side elevation, partially in section, of a turret tool post embodying my invention, Fig. 4 is a sectional view on a line w-a of Fig. 3, Fig. 5 is a sectional view on the line y-y of Fig. 3, Fig. 6 is a sectional view on the line e-z of Fig. 3.

In the drawing, 2 represents a longitudinal slide of the machine, and 3 the cross slide. On this cross slide ahead 4 is secured by means of bolts 5. The upper portion of this head is provided with clamping jaws 4 and 5 secured in their clamping position by a bolt 6. A cylindrical opening isprovided between the jaws A and 5to receive a bushing 7 that is locked against rotary movement by a suitable means, such as a key 8. An outwardly projecting, annular flange 9 is formed on one end of said bushing and is seated against the edge of the jaws A and 5 at'the forward side of the post. This flange is provided with a series of teeth 10, arranged at intervals thereon. A sleeve 11 is fitted within the bushing 7 and is provided at one end with an outwardly projecting annular flange 12 having a face opposing the outer face of the flange 9, with notches 13 formed therein to receive the teeth 10 and thereby lock the sleeve 11 positively against revolution. The flange 12 is preferably provided with bosses 14 mounted at intervals thereon, having holders 15 to receive tools inserted therein and secured by suitable means, such as bolts 16. These tool holders revolve, as indicated, with the sleeve 11, in a vertical plane, the tools projecting laterally with respect to the longitudinal axis of the supporting sleeve. The sleeve 11 extends outwardly beyond the bushing 7 at the rear end thereof and is provided with an annular groove 17 in which a ring 18 having operating handles 19 is mounted to revolve. In the face of the ring, adjacent to the end of the bushing 7 I prefer to provide an interiorly threaded recess 20, meshing with an exteriorly threaded, cone-shaped split collar 21, whose tapered end is seated against a corresponding surface 22 in the end of the bushing. A pin 23 looks the said cone against revolution, but allows a forward or backward movement thereof to engage the notches 13 with the teeth 10 or separate them, as may be desired. Within the sleeve 11 is a collet sleeve 24:, in which a tool holder 25 is mounted. This tool holder has a key-way 26 therein to receive.the end of a pin 27 that is mounted in the sleeve 11 andpasses through a longitudinal slot 28 in the collet sleeve 24 and allows the tool-holder and the collet sleeve to i move lengthwise of the sleeve 11 but prevents them from rotating independently thereof or of one another. The sleeve 11 is provided with depressions 29 therein, preferably four in number, spaced an equal distance apart in the surface of the sleeve, and a finder-ball 80 is mounted in the bushing 7 and is projected toward the sleeve 11 with a yielding pressure by the spring 31. V

This finder-ball enables the operator to register the notches 13 and the teeth 10 and set the parts in proper position for locking.

The indexing device has a dual capacity. It indexes the main turret and through the collet also indexes the tool holder, which may be used .for external turning and facing. This single index for the two multiple holders or carriers is made possible by the fact that the carriers are concentric.

I prefer also to mount an interiorly threaded ring 32 on the projecting threaded end ofthe sleeve 24, and provide it with a threaded surface to mesh with an exteriorly threaded split cone 33 that engages a tapered surface 3 1 on the end of the sleeve 11 for the purpose of locking the collet and sleeve together for simultaneous movement the cone 33 being held against rotary movement by a pin 35.

The collet 24; is tapered at one end, as shown in Fig. 1, and is split at the opposite end, as indicated in Fig. 4c, and when the ring 32 is revolved in one direction, the collet willbe moved and gripped to clamp the tool holder securely.

The ring 32 is provided with suitable handles 36. Upon loosening the ring 18 and the cone 21, the operator can revolve the sleeve 11 and change the position of the tool holders 15 for any desired working position, the notches 13 having been moved out of engagement with the teeth of the bushing 7.

When the desired position has been obtained, aided by the finder-ball, to secure proper indexing, the bushing and-sleeve are looked together and the peripheral cutting tools are ready for work. The tool-holder 25 is moved back and forth in the collet sleeve until thedesired adjustment is obtained and then by means of the ring 32 and the cone 33 the collet sleeve, the sleeve 11 and tool holder 25 may be locked firmly t0- gether. The tool holder 25 is reversible and has a socket 37 at one end to receive a tool, and when the tool post is used for turning operation, the collet 2 1 is loosened and the holder'moved back out of the way. The movement of the ring 18 will simultaneously index and clamp the turret, all lost motion being taken up by the engagement of the cooperating inclined faces.

From the foregoing description, it will be noted that the turret rotates in a plane at right angles to the axis of. the work and carries a tool holder that is concentric with the said turret and is parallel substantially with the axis of the work and is slidable in the main turret toward and from the work lso and also capable of rotation therein.

Invarious ways the details of construc tion herein shown and described may be modified and still be within the scope of my invention.

I claim as my invention:

1. A tool post comprising a member mounted to revolve on an axis parallel sub- I stantially with the axis of the Work, and a tool holder mounted in said member concentric with the axis ofthe work and an indexing means for said member and tool holder.

2. A turret tool postcomprising two concentric members, one having tool holders mounted to revolve in a plane at right angles substantially to the axis of the work each having tool holders, and a single indexing means for said members.

4. A turret tool post comprising two concentric members, one stationary and the other movable, having 'means for interlocking with one another, said movable member having tool holders mounted thereon, a ring mounted for rotation on one of said members, a cone-shaped collar havinga threaded connection with said ring, the other member having a tapered surface to engage the corresponding surface of said collar for locking 'said members together, said collar being held against rotation, the revolution of said ringclamping said members together or releasing them. v

5. A turret tool post comprising an outer member, a sleeve therein having means for interlocking with said member, means for separating them or for clamping them together, a collet sleeve mounted within said 7 first named sleeve to move lengthwise independently thereof but revolve simultane V ously therewith, a tool holder splined on said collet sleeve, and means for clamping said sleeves together. V

.6. In a turret tool post, a collet sleeve mounted for longitudinal and rotary movement, a tool holder splined in said sleeve to slide therein and rotate therewith, and

j means for clamping said collet sleeve against longitudinal movement.

7 A turret tool post comprising an outer sleeve and means for clamping the same, an inner collet sleeve, a tool holder, a pin mounted in said outer sleeve and whereon said collet sleeve and said tool holder are splined, and means for clamping said outer sleeve and said collet sleeve together.

8. A turret tool post comprising concentric members, one within the other, each having tool holders to revolve in planes at right angles substantially to the axis of the work, and a single indexing means for said members.

9. A turret tool post comprising two multiple tool carrying members arranged one within the other and having a relative longitudinal movement. r v

10. A turret tool post comprising two multiple tool carrying members, concentrically mounted one within the other.

11. A turret tool. post comprising two. multiple tool carrying members, arranged one within the other, the inner member being slidable in the outer. member. v

12. A turret tool post comprising concentric members, one carried by the other'and movable independently thereof," each having a plurality of tool holders revolving about revolving in a plane at right angles substanthe same axis. tially to the axis of the Work. 10 13. A turret tool post comprising tWo In Witness whereof, I have hereunto set multiple tool carrying members arranged my hand this 20th day of April, 1914.

one Within the other, having their axes par- CONRAD M. CONRADSON. allel, substantially, with the axis of the Witnesses:

work and movable longitudinally toward EDWARD A. PAUL,

and from the Work, and having tool holders GENEVIEVE E. SORENsEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G. 

